Association of dehydrins with wheat mitochondria during low-temperature adaptation

Association of dehydrins with wheat mitochondria during low-temperature adaptation
Borovskii, G.; Stupnikova, I.; Antipina, A.; Anuchina, O.; Voinikov, V.
2005-04-07 00:00:00
In mitochondria from the crowns of field-grown winter wheat plants or their seedlings hardened in the laboratory, thermostable proteins immunologically related to dehydrins were detected. It was found that two dehydrins with mol wts of 63 and 52 kD bound with the outer mitochondrial membrane during autumnal hardening or during adaptation to low temperature in the laboratory. Dehydrins of similar mol wts were detected among proteins in the total membrane fraction from low-temperature-adapted wheat plants. In addition, dehydrins with mol wts of 209 and 196 kD were present in this fraction as well. Dehydrins of similar mol wts were bound with mitochondria from seedlings adapted to low temperature and those from the crowns of plants after autumnal hardening. In spring, the amount of dehydrins associated with mitochondria from the crowns declined to the level characteristic of early autumn. Dehydrin association with mitochondria is evidently an important defense mechanism of frost-resistant plants.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngRussian Journal of Plant PhysiologySpringer Journalshttp://www.deepdyve.com/lp/springer-journals/association-of-dehydrins-with-wheat-mitochondria-during-low-nbVZ0uoNGD

Association of dehydrins with wheat mitochondria during low-temperature adaptation

Abstract

In mitochondria from the crowns of field-grown winter wheat plants or their seedlings hardened in the laboratory, thermostable proteins immunologically related to dehydrins were detected. It was found that two dehydrins with mol wts of 63 and 52 kD bound with the outer mitochondrial membrane during autumnal hardening or during adaptation to low temperature in the laboratory. Dehydrins of similar mol wts were detected among proteins in the total membrane fraction from low-temperature-adapted wheat plants. In addition, dehydrins with mol wts of 209 and 196 kD were present in this fraction as well. Dehydrins of similar mol wts were bound with mitochondria from seedlings adapted to low temperature and those from the crowns of plants after autumnal hardening. In spring, the amount of dehydrins associated with mitochondria from the crowns declined to the level characteristic of early autumn. Dehydrin association with mitochondria is evidently an important defense mechanism of frost-resistant plants.

Journal

Russian Journal of Plant Physiology
– Springer Journals

Published: Apr 7, 2005

Recommended Articles

Loading...

References

Dehydrins: Emergence of a Biochemical Role of a Family of Plant Dehydration Proteins

Close, T.J.

Dehydrins: A Commonalty in the Response of Plants to Dehydration and Low Temperature

Close, T.J.

Plant Dehydrins: Structure and Estimated Functions (Review)

Allagulova, Ch.L.; Gimalov, F.R.; Shakirova, F.M.; Vakhitov, V.A.

Accumulation of an Acidic Dehydrin in the Vicinity of the Plasma Membrane during Cold Acclimation of Wheat